Aurecon was commissioned by ALW Estates (Pty) Ltd to provide Environmentally Sustainable Design (ESD) services for the Atholl Towers project, which exceeded the initial Green Star ambitions for the building by incorporating a range of innovative sustainable features.
The Atholl Towers office development in South Africa was completed in two phases. The second phase, which was completed in April 2015, consists of 10 211 m2 of offices and 480 parking bays, with five basement levels.
The building is a modern, iconic design with open concept spaces. Some of the noteworthy aesthetic features include full-height façades, frameless glass and overhanging elements that create uniquely framed views of a shared public outdoor area between the two phases.
Aurecon’s ESD team worked closely with AMA architects and other project consultants to create an exceptionally energy- and water-efficient building that meets the sustainable development needs of the client. For example, the frameless, full-glass façade is not only energy efficient, but it has a self-cleaning silicone base that ensures minimal maintenance over the coming years.
Some of the other energy efficiency features include optimised air conditioning, a central heat recovery system and motion sensor light fittings. The domestic hot water system is integrated with the air conditioning system to receive recovered heat during cooling or simultaneous cooling and heating modes. When cooling is not required by the air conditioning system, it acts as an air-cooled heat pump to efficiently deliver heat to the domestic hot water system.
Sustainability initiatives that were incorporated include the use of recycled shutter boards for concrete casting, recycled steel components, the use of low Volatile Organic Compound (VOC) paint, low formaldehyde timber and finishes, the smart application of insulation materials and blinds to maximise thermal comfort for building occupants, as well as a rainwater harvesting and water conservation systems. Otis GeN2 regen drive elevators, which are up to 75% more efficient than non-generative drive lifts, complete the green features.
In 2015, the development received a 5-Star Green Star SA Rating by the Green Building Council of South Africa (GBCSA).